US20210022481A1 - Applicator having a ribbed, bristle-forming filament all around - Google Patents

Applicator having a ribbed, bristle-forming filament all around Download PDF

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Publication number
US20210022481A1
US20210022481A1 US16/980,717 US201916980717A US2021022481A1 US 20210022481 A1 US20210022481 A1 US 20210022481A1 US 201916980717 A US201916980717 A US 201916980717A US 2021022481 A1 US2021022481 A1 US 2021022481A1
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US
United States
Prior art keywords
filaments
applicator
bristle
applicator according
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/980,717
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English (en)
Inventor
Wolfgang Kamm
Huong Bister
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Geka GmbH
Original Assignee
Geka GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geka GmbH filed Critical Geka GmbH
Publication of US20210022481A1 publication Critical patent/US20210022481A1/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0238—Bristles with non-round cross-section
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/26—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/26—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball
    • A45D40/262—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball using a brush or the like
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/021—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups arranged like in cosmetics brushes, e.g. mascara, nail polish, eye shadow
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0207—Bristles characterised by the choice of material, e.g. metal
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1046—Brush used for applying cosmetics
    • A46B2200/1053—Cosmetics applicator specifically for mascara

Definitions

  • the invention is based on the objective to create an applicator which is characterized by a particularly good mass storage capacity on the one hand, and which also enables an exceptionally smooth application experience on the other.
  • an applicator which consists of bristle-forming filaments clamped between at least two wires that are twisted together.
  • a filament usually forms two bristles.
  • the part of a filament that extends from the clamping point between the twisted wires to the radially outer free end is named bristle.
  • a TPE is used for the bristle-forming filaments.
  • the elastomers from the TPE group are characterized by their particular flexibility. It is to be ensured that even within the TPE a particularly soft material is used, namely a material that has a hardness of less than 60 Shore D and ideally 55 Shore D, ideally with max. 1% tolerance. The smallest possible Shore hardness within the scope of the invention is 40 Shore D and in exceptional cases 35 Shore D.
  • the bristles according to the invention must, as far as the specific dimensioning is concerned, be matched very precisely to the individual case, since the choice of material according to the invention and the geometric configuration goes into a range that is not variable at will anymore concerning the closely related length and thickness parameters.
  • the outside diameter of the filaments should be at least 0.25 mm in an undisturbed area. Smaller diameters lead to a disruption of the desired storage function of the grooves.
  • the length of the bristles formed by these filaments should be a maximum of 3 mm for an eyebrow appliator, measured from the pinching wire core to the radially outward free end. Ideally, the bristles are at least 1.5 mm long.
  • the outside diameter of the filaments should be at least 0.35 mm in an undisturbed area. Smaller diameters lead to a disruption of the storage function of the grooves which is desired for the application of the typically very highly viscous mascara mass.
  • the length of the bristles formed by these filaments should be a maximum of 6 mm in the case of an eyebrow applicator, measured from the pinching wire core to the radially outward free end. Ideally, the bristles are at least 2 mm long.
  • the outside diameter of the filaments should be at least 0.7 mm at an undisturbed point. In many cases it is not favorable if the outer diameter of the filaments is more than 0.9 mm. Smaller diameters are unsuitable for treating the main hair, which usually offers some resistance, since they make the bristles too sensitive to kinking.
  • the length of the bristles formed by these filaments should be a maximum of 12 mm in the case of an eyebrow applicator, measured from the pinching wire core up to the radially outward free end.
  • the bristles are at least 5 mm long.
  • TPE thermoplastic elastomer
  • FIG. 1 shows an applicator according to the invention in the form of a mascara brush in a general overview.
  • FIG. 2 shows a cross section (perpendicular to the longitudinal axis of the filament) of a filament as it is used for bristle formation on an applicator according to FIG. 1 .
  • FIG. 3 shows the same as FIG. 3 , however related to with more detail.
  • FIG. 4 shows an enlarged detail from FIG. 3 , cut out in the 11 o'clock position.
  • FIG. 5 shows a filament according to the invention with a straight end and a cross section (perpendicular to the filament longitudinal axis FL), as shown by FIGS. 2 and 3 .
  • FIG. 6 shows a filament according to the invention with a pent-roof-like end and a cross section (perpendicular to the filament longitudinal axis FL), as shown by FIGS. 2 and 3 .
  • FIG. 7 shows a filament according to the invention with a gable roof-like end and a cross section (perpendicular to the filament longitudinal axis FL) as shown by FIGS. 2 and 3 .
  • FIG. 8 shows a filament according to the invention with a pyramidal end and a cross section (perpendicular to the filament longitudinal axis FL), as shown by FIGS. 2 and 3 .
  • FIG. 9 shows a detail from a cross section of a filament with shallow grooves.
  • FIG. 10 shows a detail from a cross section of a filament with medium-deep grooves.
  • FIG. 11 shows a detail from a cross section of a filament with deep grooves.
  • FIG. 1 A first overview of an applicator according to the invention 1 in the form of a mascara applicator is shown in FIG. 1 .
  • This mascara applicator consists of a core 2 , which in turn has been made from at least two wires twisted spirally with one another.
  • the core 2 defines a longitudinal axis L of the applicator.
  • a number of bristle-forming filaments 5 (see FIG. 5 ) have been inserted between the two wires 3 and 4 . These are then held clamped between the two wires 3 and 4 by twisting them.
  • Each filament 5 forms two bristles 6 which protrude from the core 2 in different directions.
  • the trim of the mascara applicator which cannot be identified qualitatively in greater detail with reference to FIG. 1 , consists (predominantly, essentially or completely) of bristles in the form of the filaments according to the invention.
  • Said specially designed bristle-forming filaments have a filament longitudinal axis FL. They are shown as such—in various variants—in the context of FIGS. 5, 6, 7 and 8 . However, the respective image of the filament is strongly “compressed” in the direction of its longitudinal filament axis FL.
  • FIG. 2 The cross section according to the invention of a bristle-forming filament 5 to be used according to the invention is shown in FIG. 2 .
  • this bristle-forming filament used according to the invention has a solid core in the cross section running perpendicular to its longitudinal axis, which is denoted by the reference number 7 and which is marked in FIG. 3 by the broken line.
  • At least eight and in the present case ten ribs 8 protrude outward in the radial direction from this bristle-forming core.
  • the ribs protrude outward on all sides relative to the filament longitudinal axis FL, which usually forms the center. This means at each point of the outer jacket of the core, there is preferably a rib 8 present, which protrudes outward in the radial direction, as shown in FIG. 3 .
  • the adjacent ribs 8 meet where the cross-section merges into said solid core 7 .
  • each of the ribs 8 is configured to be continuous in the direction of the longitudinal axis FL of the respective bristle-forming filament 5 , that is to say has no or essentially no interruption.
  • the maximum diameter DKmax of the solid core 7 is preferably more than twice the radial extension Re of a rib. This can be seen clearly from FIG. 3 .
  • the maximum outside diameter of the filament which it preferably has at any height along its longitudinal filament axis FL, bears the reference symbol DAmax, cf. FIG. 3 .
  • the bristle-forming filament according to the invention preferably consists of a thermoplastic elastomer, that is to say of an elastomer from the TPE family.
  • Thermoplastic elastomers are characterized by the fact that they are particularly soft and pliable. This gives the bristles 6 , which are formed by the bristle-forming filaments 5 clamped between the wires 3 , 4 , a particularly good conformability. Nevertheless, in order not to let the bristles become too soft and pliable, the invention provides that a comparatively large bristle outer diameter is realized, as already stated numerically above for a mascara applicator and also defined later for eyebrow applicators and brushes for main hair.
  • the function of the radially outwardly protruding ribs 8 is revealed. They increase the effective outer diameter DAmax of the bristle-forming filament and thus the flexural strength of the later bristle 6 , even if extremely soft material is used.
  • the substance stored in these grooves 9 is only released—usually gradually—when the bristle formed by the filament in question bends back and forth several times in contact with the surface to be treated or the hair to be treated and thereby the substance in the area of the grooves 9 is pushed out.
  • This ideally gradual release of the substance to be applied allows the applicator to work very long-term without having to “reload” in between.
  • the storage effect according to the invention is further enhanced by the fact that the ribs 8 , considering the circumferential direction, have a width that changes in the radial direction.
  • the ribs here each have a base section 10 and a tip section 11 .
  • the base section 10 is here that section of a rib which, viewed in the radial direction, lies closer to the center of the cross section formed by the filament longitudinal axis FL.
  • the tip section 11 of a rib is that section of a rib which, viewed in the radial direction, lies further away from said center.
  • the tip section 11 of the ribs 8 as soon as one moves in the radial direction outward from the transition base section/tip section in the circumferential direction—by far predominantly (more than 50%, better than 75%) has a greater extent EU 1 , as the transition between the base section and the tip section of the relevant rib, the extent of which in the circumferential direction is only EU 2 , cf. FIG. 4 .
  • the tip section of a rib preferably circular in cross section (or alternatively, to approximate it in a multipolygonal manner).
  • This preferably means that the cross-sectional profile, seen perpendicular to the filament longitudinal axis FL, has a circular profile over an angle beta of more than 220°, cf. FIG. 3 .
  • each groove 9 between two ribs 8 directly adjacent in the circumferential direction preferably runs completely straight in the direction along the filament longitudinal axis FL.
  • the applicators according to the invention are preferably characterized in that the number of filaments clamped per turn of their wire core is relatively small. It is predominantly or for all turns between 3 and 15 filaments per turn.
  • the filaments according to the invention which are used here for forming bristles are preferably continuously extruded filaments. This is very advantageous in so far as the filaments are strongly stretched in the direction of their longitudinal filament axis as they pass through the extruder nozzle.
  • extrusion is not just a manufacturing process, but also a physically reflected “product-by-process” feature, because extrusion means that the molecular chains of the filament-forming plastics are aligned to a high degree in the same direction and increasingly parallel to the filament longitudinal axis, i.e. drawn out.
  • such filaments or the bristles formed from them have an excellent ability to straighten up, which is also referred to as bend recovery ability. In this respect, they are physically different (namely with regard to their sub-macroscopic structure) and therefore clearly superior to sprayed bristles.
  • the filaments used according to the invention for forming the bristles consist of pure TPE.
  • Particularly preferred TPE used are the subgroups TPE-A and TPE-S, which on the one hand can be extruded particularly well with the required dimensional accuracy and on the other hand have a superior bend recovery capacity, which is an essential property for a material, used for the production of bristle-forming filaments.
  • a filler material which has just proven to be very suitable for use in accordance with the invention is calcium carbonate. Added in small amounts, calcium carbonate hardly changes the application properties of the TPE. Used in slightly larger quantities, the elasticity is reduced. This is process-wise easily controllable, i.e. the desired bristle properties can be set very quickly and efficiently using the teaching according to the invention.
  • the material of the bristle-forming filaments is always chosen according to the invention n such a manner that it has a hardness that is below 60 Shore D and ideally 55 Shore D, plus any tolerance values, as already mentioned above.
  • Sharpening is typically only carried out after the filaments have been installed and the wires holding them twisted, i.e. at a stage in which each filament has already formed two bristles.
  • the bristles are usually fed to a grinding wheel.
  • all or a predominant part of the bristles are given a simple, one-dimensional bevel, which gives them a pent-roof-like bevel 13 at their free end, which FIG. 6 illustrates in more detail.
  • FIG. 8 An even more favorable constellation is shown in FIG. 8 .
  • the free end of each or at least the majority of the bristles has been ground from four sides.
  • the bristle in question comprises a pyramidal bevel 16 . It is evident that the tip 17 of the pyramid can penetrate particularly well into a field with tangled hair and can develop a separating effect here.
  • the second embodiment is an eyebrow applicator. All of the above applies identically to it. The figures also apply. The only difference is that the parameters of the filament as well as bristle outer diameter and the bristle length that are required for eyebrow application that were already specified at the beginning must be observed.
  • the third embodiment is a main hair applicator. All of the above applies identically to him, and the figures also apply. The only difference is that the parameters of the filament required for the main hair application as well as the outer bristle diameter and the bristle length that were already specified at the beginning must be observed.
  • the tip section 11 of each or the predominant number of the ribs 8 is preferably designed to be circular in cross-section, as can also be seen from the figures explained below.
  • the depth of the groove 9 should be dimensioned so that the maximum depth of groove 9 is chosen in such a way that the circle with diameter DKmax, which forms the sheath of the solid core 2 and the circles inscribed in the tip sections 11 with the radius r are still tangent, cf.
  • FIG. 9 which shows a relatively shallow depth for this application, in which the said circles intersect, and FIG. 10 , which shows the maximum depth for this application, since the said circles are only tangent.
  • the radius which is provided with the reference symbol DKmax is the radius which belongs to the maximum diameter of the core 2 .
  • the applicator which is equipped with the fiber according to the invention is a mascara applicator, i.e. an applicator that is intended for the application of a cosmetic on the eyelashes or is even specialized in this
  • the depth of the groove 9 should be such that the groove 9 is at least deep enough that the circle that forms the sheath of the massive core 2 and the circles inscribed in the tip sections 11 are still tangent or the depth of the groove should be made larger so that the said circles no longer tangle (and certainly do not intersect), cf. FIG. 11 .
  • the applicator to which the fiber according to the invention is to be applied is an applicator for the main hair, i.e. an applicator which is intended for the application of a cosmetic on the main hair or is even specialized in this, then the depth of the groove 9 should be such that the groove 9 is always made so deep that the circle that forms the sheath of the solid core 2 and the circles inscribed in the tip sections 11 no longer tangle (and certainly do not intersect), cf. again FIG. 11 .

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  • Brushes (AREA)
US16/980,717 2018-03-14 2019-03-11 Applicator having a ribbed, bristle-forming filament all around Abandoned US20210022481A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202018101427.7 2018-03-14
DE202018101427.7U DE202018101427U1 (de) 2018-03-14 2018-03-14 Applikator mit rundum verripptem, borstenbildendem Filament
PCT/EP2019/056027 WO2019175108A1 (fr) 2018-03-14 2019-03-11 Applicateur doté d'un filament formant des soies, nervuré sur toute la périphérie

Publications (1)

Publication Number Publication Date
US20210022481A1 true US20210022481A1 (en) 2021-01-28

Family

ID=65894968

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/980,717 Abandoned US20210022481A1 (en) 2018-03-14 2019-03-11 Applicator having a ribbed, bristle-forming filament all around

Country Status (6)

Country Link
US (1) US20210022481A1 (fr)
EP (1) EP3764840A1 (fr)
KR (1) KR20200133252A (fr)
CN (1) CN111836566B (fr)
DE (1) DE202018101427U1 (fr)
WO (1) WO2019175108A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD1030327S1 (en) * 2022-08-12 2024-06-11 Besweet Creations Inc. Brow brush

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993440A (en) * 1986-11-28 1991-02-19 L'oreal Brush for the application of cosmetic products, mascara in particular
US6390708B1 (en) * 1999-07-22 2002-05-21 L'oreal Application device and system having helical-grooved bristles, and method of applying a product
US6391445B1 (en) * 1998-04-24 2002-05-21 Pedex & Co. Gmbh Bristle, method for producing said bristle and a device with a bristle of this type
US20040011375A1 (en) * 2002-07-18 2004-01-22 Geka Brush Gmbh Mascara brush
US20140003857A1 (en) * 2010-07-29 2014-01-02 L'oreal Applicator and a packaging and applicator device including such an applicator
US8662090B2 (en) * 2006-12-18 2014-03-04 L'oreal S.A. Mascara brush

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE638856A (fr) * 1962-10-19
FR2627068B1 (fr) * 1988-02-12 1990-12-07 Oreal Brosse pour l'application d'un produit de maquillage, notamment de mascara, et reservoir de produit equipe d'une telle brosse
FR2706749B1 (fr) * 1993-06-23 1995-08-25 Oreal Brosse pour appliquer un produit de maquillage, en particulier du mascara
US5987688A (en) * 1995-11-09 1999-11-23 Gillette Canada Inc. Gum-massaging oral brush
CA2261763A1 (fr) * 1996-07-25 1998-02-05 Whitehill Oral Technologies, Inc. Brosse a dents a efficacite de nettoyage et d'abrasion amelioree
FR2759872B1 (fr) * 1997-02-21 1999-03-26 Oreal Ensemble de conditionnement et d'application d'un produit de maquillage de fibres keratiniques
MXPA01002933A (es) * 1999-07-21 2002-04-08 Oreal Dispositivo para la aplicacion de un producto sobre las fibras queratinicas, particularmente las pestanas o las cejas.
US10098447B2 (en) * 2014-07-15 2018-10-16 The Procter & Gamble Company Oral-care implement having color-communicative element
US20170347776A1 (en) * 2016-06-07 2017-12-07 Elc Management Llc Cosmetic Applicator Having One Molded And One Non-Molded Brush

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993440A (en) * 1986-11-28 1991-02-19 L'oreal Brush for the application of cosmetic products, mascara in particular
US6391445B1 (en) * 1998-04-24 2002-05-21 Pedex & Co. Gmbh Bristle, method for producing said bristle and a device with a bristle of this type
US6390708B1 (en) * 1999-07-22 2002-05-21 L'oreal Application device and system having helical-grooved bristles, and method of applying a product
US20040011375A1 (en) * 2002-07-18 2004-01-22 Geka Brush Gmbh Mascara brush
US8662090B2 (en) * 2006-12-18 2014-03-04 L'oreal S.A. Mascara brush
US20140003857A1 (en) * 2010-07-29 2014-01-02 L'oreal Applicator and a packaging and applicator device including such an applicator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD1030327S1 (en) * 2022-08-12 2024-06-11 Besweet Creations Inc. Brow brush

Also Published As

Publication number Publication date
KR20200133252A (ko) 2020-11-26
EP3764840A1 (fr) 2021-01-20
DE202018101427U1 (de) 2019-06-17
CN111836566A (zh) 2020-10-27
WO2019175108A1 (fr) 2019-09-19
CN111836566B (zh) 2022-11-29

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